1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e46625bf60adde191e39395d5ffb562cc9abc514393728c64fa6023452d09cb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63aafcf0-a71b-4bde-bd22-ffd54c25dfda.json and https://artists.proofprofile.net/proofs/artist/63aafcf0-a71b-4bde-bd22-ffd54c25dfda.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b37a1027444d622e6c0e96aaab42859e8ab3941164639793a5c2ac4bf1d512. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560672660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359a98ced499a6ec37c12f0ddc526acc9afe15e33df18f2454c2f21e9118e4f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:10:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560672661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ee6fbdba2ca91652509f0c82f7c0623d57a0a28ea074d4cd9f8776029e1083. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:36:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560672663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4330c40ed63083829d787e4fa87c494e0f03f4c092fe215bca99b57f76b96ea7. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560672665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ff4289589420c66f2d24511cbc24f440e47cc764c615f2f0d0e96ead8f4511. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1462454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849db01ea4f829f8ebee8c10058885ba85c3dd86c0fec55fc14c2952804d6a38. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1462456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbcf7112ef17e40e26ab6c8693d7a02baf070eb508ca35564bece7407c5113e. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1462458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617114ccf81e80aaf85529c31cf5e22ac933059863e7fb550e33be638643e148. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1462461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d997d7c67a491180ade6011b54f86d28d20a8de7add6298dc29ecd5057b83a1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1462462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47ef4dd83c7d9b681e941d6900f9a99e7ad04881936aa8b8357a43779fba3fc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ11900292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ec715f41e7f083992093a65f517b96dbf4286e36711640ada8d7e58a7e7e45. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d76b5a6282b7d31c8d51a91ba79ee35e88888ba06cfe11fb2b589dc24e1ed67. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555d7199f0a72b46cdc1775e21edcd14a54fe56bb112794106ba61aa3eb50ca6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c5e8753a390f5a79822b8dfe3b67e718920bdb017688aadcd057811640f69f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e58fbb122bbaffe3f33e0df3d8f88fbf7364b7137588c1cf5b6dc4b91202c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9c6f555c78945cb75fe00c6f86510adf80dd185505f6220991c72d6073528f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e02193ffe85a6fa3689029d0e37d25f9fa507ee8a92f9c13648b0ebbf6d649. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fda21d99be89d7dbab7281709b825e04709918990e263375a9d333aebda2fb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc429c11409033853cd217a1cf2fc19ba31d85316af33971d8f3000ad671f1468. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115276b947ad73f20efd69e314fef3dadab59aa527d803af9d4c9e1446784a78. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644492b74f78f7787b3a10ed852f11bb2bb3e73e4b57f1a3fb7d9b319cc2a3a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATAJ12100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb30ae3420e950cca7fa18bde2acbd937853e7ea4b6bef222825737d7482e38. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5DA2100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c90826aef4310c37a1b76bec0ced4c97286c0093cbcc60d14c8a1497301f0eb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5DA2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73d48d7a9bea0dbf79faa4a118344dc10e49a54880b2ddb1f4596a498c92be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5DA2100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb30ae3420e950cca7fa18bde2acbd937853e7ea4b6bef222825737d7482e38. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5DA2100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43777ae62eba325e7bd6dba7077f1564ea6e0256323eb45f2696cc6ba9d65a22. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5DA2100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beeb363ab8a6cc55f071f1f8ceb665ddecbdefcc4394c83f79db699be4d9929. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BAA052232790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efffb7a0a62b1b54c2d499c04b45bf8101f5ef8f23ef245becf379faf6a2047. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BAA052232794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf895675bd35c066ee4de96a079bb37bf2d4f22622f7dfd00f49d6629ced66639. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RSA0G2200498.